000 00293nam a2200121Ia 4500
008 230302s9999 xx 000 0 und d
041 _aeng
082 _a004.678COM
100 _aCOMER (Douglas)
245 _aComputer Networks and Internets
260 _aNEW DELHI
_b PEARSON
365 _cRS
999 _c146041
_d146041